KO Sangik has been the leader of the 15minutes City Division Team at Jeju Special Self-Governing Province from January 22, 2024, and promoted urban regeneration projects in Jeju and Seogwipo–si and balanced development projects in Jeju. Previously, he promoted the urban regeneration project of Jeju City in Namseong Village District, Geonip-dong District, Yongdam 1-dong District and Ildo 2-dong District) while serving as the head of the urban regeneration department of Jeju City from January 12, 2022 to January 21, 2024.